<template>
    <div>
        <div class="search">
            <input v-model='keyword' class='search-input' type="text" placeholder= '输入城市名或拼音'>
        </div>
        <div 
            class="search-content" 
            ref='search'
            v-show='keyword'
        >
            <ul>
                <li 
                    class='search-item border-bottom' 
                    v-for='item of list' 
                    :key="item.id"
                    @click='handleCityClick(item.name)'
                >
                    {{item.name}}
                </li>
                <li 
                    class='search-item border-bottom' 
                    v-show="hasNoData"
                >
                    没有找到匹配数据
                </li>

            </ul>
        </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
    name: 'CitySearch',
    props:{
        cities: Object
    },
    methods: {
        handleCityClick(city){
            this.$store.dispatch('changeCity',city)
            this.$router.push('/')
            // alert(city)
        }
    },
    data () {
        return {
            keyword: '',
            list: [],
            timer: null
        }
    },
    computed : {
        hasNoData () {
            return !this.list.length
        }
    },
    watch: {
        keyword () {
            if (this.timer) {
                clearTimeout(this.timer)
            }
            if (!this.keyword) {
                this.list = []
                return
            }
            this.timer = setTimeout(()=> {
                const result = []
                for (let i in this.cities) {
                    this.cities[i].forEach((value)=> {
                        if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1 ) {
                            result.push(value)
                        }
                    })
                }
                this.list = result
            },100)
        }
    },
    mounted () {
        this.scroll = new Bscroll(this.$refs.search,{click: true})
    }
}
</script>

<style lang='stylus' scoped>
    @import '~styles/varibles.styl'
    .search
        height .72rem
        background $bgColor
        padding 0 .1rem
        .search-input
            height .62rem
            line-height .62rem
            width 100%
            text-align center
            border-radius   .06rem
            color #666
            padding 0 .6rem
            box-sizing border-box
    .search-content
        position absolute
        top 1.58rem
        left 0
        right 0
        bottom 0
        overflow hidden
        background #eee
        z-index 1
        .search-item
            line-height .62rem
            padding-left .2rem
            color #666
            background #fff
</style>
